Firefly Jayne Cobb with Hat ReAction Retro Action Figure - SDCC Preview Firefly jayne cobb with hat reaction 3 3/4-inch retro action figure - previews san diego comic-con exclusive is a limited edition. The "hero of canton" stands tall at 3 3/4-inches tall with trusty vera and his signature hat! This jayne cobb reaction figure features jayne cobb in his green shirt, guns in his hands, and is packaged in a coffin-style blister.